The controversial religious organization tweeted him, asking him to repent for his sins, he responded in typical Shelton form. “Hey @WBCSaysRepent I see y’all are back at it!! Did y’all ever expand your gene pool or are you still nailing your immediate family members?” he wrote. From there, he posted a picture of the church’s founder Fred Phelps (who died in 2014), writing, “Never mind @WBCSaysRepent.. I think I just answered my own question…”

But Shelton didn’t stop there. Last but not least, he posted a doctored and blurred but still NSFW picture of Phelps engaged in a lewd act.

This isn’t the first time he’s butted heads with WBC. After they threatened to picked one of his concerts in 2013, he got into a Twitter fight with the group. TMZ caught Shelton shortly after their back-and-forth, where he had more choice words for them. “Westboro Baptist Church can b— me. Yeah, really they can. Can you quote me on that? They can b— me. I think that’s one of the Commandments,” he said, chuckling (via Taste of Country).